Preparation method of compressing urban waste fabric into building formwork

Abstract

This invention relates to a method for preparing building templates by pressing urban waste fabric. The method includes: S100, recycling urban waste fabric fibers to obtain fabric fiber material; S200, applying adhesive to the fabric fiber material; S300, laying the adhesive-treated fabric fiber material to obtain a waste fabric blank; S400, pre-pressing and degassing the waste fabric blank to obtain a low-strength waste fabric blank; S500, hot-pressing the low-strength waste fabric blank to obtain a waste fabric rough board; S600, cooling and surface stabilizing the waste fabric rough board to obtain a pre-finished board; S700, cutting and surface polishing the pre-finished board to obtain a finished board. This invention can turn waste fabric into building templates, turning waste into treasure, protecting the environment while improving economic benefits.

Description

Technical Field

[0001] This invention relates to the field of environmental protection technology, specifically to a method for preparing building templates by pressing urban waste fabric. Background Technology

[0002] Textile enterprises and urban life generate a large amount of urban waste fabric. This waste is primarily disposed of through simple methods such as incineration and landfill, which impacts land use and, more importantly, the environment. Faced with the significant challenge of managing urban waste fabric, its resource recovery and recycling have become a hot topic.

[0003] Construction formwork is the mold and support for concrete pouring. Currently, construction formwork is mainly made of multi-layer plywood, steel formwork, aluminum formwork, plastic formwork, etc., which are expensive and wasteful of raw materials. Summary of the Invention

[0004] In view of this, the present invention aims to propose a method for compressing urban waste fabric into building templates, which can turn waste fabric into building templates, turning waste into treasure, and improving economic benefits while protecting the environment.

[0005] This invention provides a method for preparing building templates by pressing urban waste fabric into formwork, the method comprising:

[0006] S100 regenerates urban waste fabric fibers to obtain fabric fiber materials;

[0007] S200, the fabric fiber material is sizing treated;

[0008] S300, the fabric fiber material after sizing is laid out to obtain waste fabric blank;

[0009] S400, the waste fabric blank is pre-pressed and de-vented to obtain a low-strength waste fabric blank;

[0010] S500, the low-strength waste fabric blank is hot-pressed to obtain waste fabric rough board;

[0011] S600, the waste fabric board is subjected to cooling and surface stabilization treatment to obtain a pre-finished board;

[0012] S700, the pre-finished board is cut and its surface is polished to obtain the finished board.

[0013] In a preferred embodiment of the present invention, in step S100:

[0014] After the urban waste fabric is sorted and cut, it is broken down, combed and sorted by a fabric fiber recycling machine to obtain the fabric fiber material. The fabric fiber material produced by the fabric fiber recycling machine has a predetermined length and a predetermined shape.

[0015] In a preferred embodiment of the present invention, in step S200:

[0016] The fabric fiber material is sizing treated with a mixture of adhesive, additives and process water.

[0017] In a preferred embodiment of the present invention, in step S200:

[0018] The adhesive is an isocyanate adhesive, and the sizing process includes the isocyanate adhesive undergoing thermal melting and local chemical reaction with the fabric fiber material at 160-200°C to form an internal bond structure, and then cooling down to below 100°C to form a stable structure.

[0019] In a preferred embodiment of the present invention, in step S300:

[0020] The sizing-treated fabric fiber material is fed into a paving machine for paving. The paving machine is a paving machine with a cage roller dispersing and toothed roller paving structure.

[0021] In a preferred embodiment of the present invention, in step S400:

[0022] The waste fabric blank is fed into a pre-compressor for pre-compressing and degassing.

[0023] In a preferred embodiment of the present invention, in step S500:

[0024] The low-strength waste fabric blank is fed into a continuous press for hot pressing treatment, wherein the hot pressing temperature and pressure are different at different positions along the production direction on the low-strength waste fabric blank.

[0025] In a preferred embodiment of the present invention, in step S500:

[0026] The hot pressing temperature of the continuous press is 160-200℃, and the hot pressing process is as follows:

[0027] First, pressurize to 350-550 N / cm 2 Then gradually reduce the pressure to 50–150 N / cm. 2 Then increase the pressure to 100-200 N / cm 2 ;

[0028] The average density of the obtained waste fabric slab is 900–1100 kg / m³. 3The elastic modulus is greater than or equal to 2000 MPa, the internal bond strength is greater than or equal to 0.6 MPa, and the thickness swelling rate after 24 hours of water absorption is less than or equal to 1%.

[0029] In a preferred embodiment of the present invention, in step S600:

[0030] The waste fabric blank is fed into a rapid cold press for cooling and surface stabilization treatment, wherein the temperature after cooling is less than or equal to 80°C, and the surface stabilization pressure is 50-100 N / cm. 2 .

[0031] In a preferred embodiment of the present invention, in step S700:

[0032] The pre-finished board is cut using a high-speed sawing system to obtain a standard rough board, and the surface of the standard rough board is sanded and polished using a sanding system to obtain the finished board.

[0033] The method of this invention can turn waste fabric into building templates, turning waste into treasure. It not only protects the environment but also improves economic benefits, and has broad application space and development prospects. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic flowchart of a method for preparing building templates by compressing urban waste fabric into formwork, according to an embodiment of the present invention.

[0036] Figure 2 This is a schematic diagram illustrating the principle details of a method for preparing building templates by pressing urban waste fabric into formwork, according to an embodiment of the present invention. Detailed Implementation

[0037] The description of the embodiments in this specification should be taken in conjunction with the accompanying drawings, which should form part of the complete specification. In the drawings, the shape or thickness of the embodiments may be exaggerated and may be indicated in a simplified or convenient manner. Furthermore, parts of the various structures in the drawings will be described separately; it is worth noting that elements not shown in the figures or not described in words are in a form known to those skilled in the art.

[0038] The descriptions of the embodiments herein, including any references to directions and orientations, are for ease of description only and should not be construed as limiting the scope of the invention. The following description of preferred embodiments involves combinations of features, which may exist independently or in combination; the invention is not particularly limited to the preferred embodiments. The scope of the invention is defined by the claims.

[0039] like Figure 1 and Figure 2 The diagram shown is a schematic representation of a method for preparing building templates by pressing urban waste fabric into formwork, according to an embodiment of the present invention. The method includes:

[0040] S100 regenerates urban waste fabric fibers to obtain fabric fiber materials.

[0041] In this embodiment, urban waste fabric is first initially sorted in a fabric sorting machine. The sorted waste fabric is then cut into small segments of a certain length by a cutting machine, and then sent to a fabric fiber recycling machine. Through the fiber recycling process, including dispersing, combing, and fiber sorting, the fabric fiber material needed for board making is produced and stored in a fabric fiber silo. The fabric fiber material in the silo is then sent to a fiber sorting machine for further sorting, removing excessively large fibers or other fabric debris, and selecting the required fabric fiber material. Finally, data such as fiber bulk density and weight are obtained using a metering instrument.

[0042] S200, the fabric fiber material is treated with adhesive.

[0043] In this embodiment, the fabric fiber material is fed into the adhesive application system, and adhesive is applied to the fiber surface according to the metering data in S100 at an appropriate ratio. Isocyanate adhesive is preferably used as the adhesive, mixed with additives, process water, etc., to apply the adhesive to the fabric fiber material used for board making. The isocyanate adhesive undergoes thermal fusion and localized chemical reaction with the fabric fibers at 160–200°C, forming a dense internal bond structure, and its performance remains stable below 100°C. Under specific process requirements, the adhesive is not limited to the above range and can be adjusted as needed.

[0044] S300, the fabric fiber material after sizing is laid out to obtain waste fabric blank.

[0045] In this embodiment, the sizing-treated fabric fiber material is fed into the paving machine, where it is spread by the cage rollers and laid by the toothed rollers, forming a waste urban fabric slab on the bottom conveyor belt of the paving machine. Typically, a certain negative air pressure is maintained inside the paving chamber to facilitate a denser paving.

[0046] S400, the waste fabric blank is pre-pressed and de-vented to obtain a low-strength waste fabric blank.

[0047] In this embodiment, urban waste fabric slabs are conveyed to a pre-pressing machine. After pre-pressing and venting, the slab height is significantly reduced, forming low-strength waste fabric slabs with preliminary strength, ensuring their strength is sufficient for subsequent material handling. After pre-pressing, surface humidification and slab preheating devices can be installed to shorten the subsequent hot pressing process.

[0048] S500, the low-strength waste fabric blank is hot-pressed to obtain waste fabric rough board.

[0049] In this embodiment, low-strength waste fabric blanks are fed into a continuous press and, clamped by upper and lower circulating steel belts, enter between upper and lower hot press plates under the action of hydraulic cylinders with specific temperatures and pressures. The low-strength waste fabric blanks move with the steel belts, simultaneously completing the heating and pressing process according to pre-set pressure, temperature, and displacement curves, and are pressed into waste fabric rough sheets that meet the requirements. The waste fabric rough sheets then enter the post-processing stage. The vertical displacement position of the hot press plates in the continuous press can be accurately positioned, and the hot pressing temperature and pressure at different positions in the production direction (or longitudinal direction) can be set according to the production process requirements. This significantly improves the product quality of the pressed products, and the production temperature, pressure, and displacement are all controlled in a closed loop, resulting in a high degree of automation.

[0050] Preferably, the hot pressing temperature of the continuous press is 160–200°C, and the hot pressing process is as follows: first, pressurize to 350–550 N / cm. 2 Then gradually reduce the pressure to 50–150 N / cm. 2 Finally, increase the pressure to 100-200 N / cm. 2 The average density of the obtained waste fabric slab is 900–1100 kg / m³. 3 The elastic modulus is greater than or equal to 2000 MPa, the internal bond strength is greater than or equal to 0.6 MPa, and the thickness swelling rate after 24 hours of water absorption is less than or equal to 1%.

[0051] S600, the waste fabric board is subjected to cooling and surface stabilization treatment to obtain a pre-finished board.

[0052] In this embodiment, the temperature of the urban waste fabric slab that just came out of the continuous press is still very high, and the surface of the slab is prone to blistering or bulging. It is necessary to send the urban waste fabric slab into the rapid cold press in time to cool down the slab and stabilize its surface, thereby stabilizing the quality of the slab.

[0053] Preferably, a rapid cold press is used to cool and stabilize the surface of the waste urban fabric board. After cooling, the temperature is ≤80℃, and any bubbles or bumps remaining after the hot pressing reaction are flattened. Typically, a pressure of 50-100 N / cm is applied. 2 The specific application process can also be adjusted appropriately.

[0054] S700, the pre-finished board is cut and its surface is polished to obtain the finished board.

[0055] In this embodiment, the pre-finished boards are fed into a high-speed sawing system for cutting, forming standard rough boards that meet the required dimensions. Then, the standard rough boards are sent to a sanding system for surface sanding and polishing to obtain the required thickness and surface quality, forming finished urban waste fabric boards that meet the requirements. Finally, the finished boards undergo sorting and packaging, classifying and grading them according to specifications and quality requirements for easy subsequent sales and applications.

[0056] The method of this invention can turn waste fabric into building templates, turning waste into treasure. It not only protects the environment but also improves economic benefits, and has broad application space and development prospects.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for preparing building templates by pressing urban waste fabric, characterized in that, The method includes: S100 regenerates urban waste fabric fibers to obtain fabric fiber materials; S200, the fabric fiber material is sizing treated; S300, the fabric fiber material after sizing is laid out to obtain waste fabric blank; S400, the waste fabric blank is pre-pressed and de-vented to obtain a low-strength waste fabric blank; S500, the low-strength waste fabric blank is hot-pressed to obtain waste fabric rough board; S600, the waste fabric board is subjected to cooling and surface stabilization treatment to obtain a pre-finished board; S700, the pre-finished board is cut and surface polished to obtain the finished board; In step S100: After the urban waste fabric is sorted and cut, it is broken down, combed and sorted by a fabric fiber recycling machine to obtain the fabric fiber material. The fabric fiber material produced by the fabric fiber recycling machine has a predetermined length and a predetermined shape. In step S200: The adhesive is an isocyanate adhesive, and the adhesive application process includes the isocyanate adhesive and the fabric fiber material undergoing thermal melting and local chemical reaction at 160~200°C to form an internal bond structure, and cooling down to below 100°C to form a stable structure; In step S500: The hot pressing temperature of the continuous press is 160~200°C, and the hot pressing process is as follows: First, pressurize to 350~550 N / cm², then gradually reduce the pressure to 50~150 N / cm², and then pressurize to 100~200 N / cm². In step S600: The waste fabric board is fed into a rapid cold press for cooling and surface stabilization treatment, wherein the temperature after cooling is less than or equal to 80°C and the surface stabilization pressure is 50~100 N / cm².

2. The method for preparing building templates by pressing urban waste fabric into formwork according to claim 1, characterized in that, In step S200: The fabric fiber material is sizing treated with a mixture of adhesive, additives and process water.

3. The method for preparing building templates by pressing urban waste fabric into formwork according to claim 1, characterized in that, In step S300: The sizing-treated fabric fiber material is fed into a paving machine for paving. The paving machine is a paving machine with a cage roller dispersing and toothed roller paving structure.

4. The method for preparing building templates by pressing urban waste fabric into formwork according to claim 1, characterized in that, In step S400: The waste fabric blank is fed into a pre-compressor for pre-compressing and degassing.

5. The method for preparing building templates by pressing urban waste fabric into formwork according to claim 1, characterized in that, In step S500: The low-strength waste fabric blank is fed into a continuous press for hot pressing treatment, wherein the hot pressing temperature and pressure are different at different positions along the production direction on the low-strength waste fabric blank.

6. The method for preparing building templates by pressing urban waste fabric into formwork according to claim 1, characterized in that, In step S700: The pre-finished board is cut using a high-speed sawing system to obtain a standard rough board, and the surface of the standard rough board is sanded and polished using a sanding system to obtain the finished board.

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